<template>
  <input type="text" v-model="wenben" />

  <h4>{{ wenben }}</h4>
</template>
  
<script>
import { customRef, ref } from "vue";
export default {
  name: "Demo",

  setup() {
    //let wenben = ref("hello");  //使用Vue提供的ref

    
    
    let wenben =ref("hello");

    return {
      wenben,
    };
  },
};
</script>
  
  <style>
</style>
  